Hilum (biology)

Source: Wikipedia, the free encyclopedia.
The hilum is the white region in the center of the namesake "black eye" of the black-eyed pea

In botany, a hilum (pronounced

seed coat by the former attachment to the ovary wall or to the funiculus (which in turn attaches to the ovary wall). On a bean
seed, the hilum is called the "eye".

For some species of fungus, the hilum is the microscopic indentation left on a spore when it separates from the sterigma of the basidium.[1]

A hilum can also be a nucleus of a starch grain; the point around which layers of starch are deposited.

The adjectival form hilar denotes the presence of such a mark, and can be used as a distinguishing characteristic of a seed or spore.

References

  1. ISBN 978-0-85199-826-8
    .
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